Hand tool



Jan. 1925- 1,521,968

A. J. RICHARDS ET AL HAND T 0 0L Filed Dec. 18 192:5

lNl/EIVTOR AJRZc AEw FCZ'SIZQENMBG I A nomvs s WITNESSES Patented Jan.6, 1925.

ATE

OFFICE.

ARTHUR J. RICHARDS, OF JERSEY CITY, NEW JERSEY, AND.FREDERICK. J.SIEDEN- BURG, 0F BROOKLYN, NEW YORK.

HAND rooL.

Application filed December 18, 1923. Serial No. 681,405.'

T0 all-whom it may concern:

Be it .known that we, ARTHURJ. RICH- ARDS and FREDERICK J. SIEDENBURG,both citizens of the United States, and residents, respectively,ofJe-rsey City, in the county of Hudson and State of New Jersey, and ofthe city of New York, borough of Brooklyn, in the county of Kings andState of New York, have invented a new and Improved Hand Tool, of whichthe following is a full, clear, and exact description.

The present invention relates to new and usefulimprovements in devicesfor converting reciprocatingmotion into rotary motion, and while themechanism is adapted to general uses, it is particularly adapted for usein connection with valve grinding tools and similar devices.

It is one of the primary objects of the present invention to provide anew and improved hand. tool for grinding valves of internal combustionmotors and the like.

It is a. further object of the invention to provide means whereby avalve engaging tool may be given intermittent rotary motion in oppositedirections in order to grind the valve to its seat.

It is a further object of the invention to construct the device in sucha manner that the valve engaging tool may be maintained in engagementwith the valve operated upon, with one hand and driven by the other handof an operator.

It is a further objectof the invention to construct the device in such amanner that the operating means of the valve engaging tool is adjustablerelatively thereto.

l/Vith the above and other objects in view, reference is had to theaccompanying, drawings, in which Figure 1 is a perspective view of atool constructed in accordance with the present invention showing afragmentary section of an element having a valve seat and a valvemounted therein.

Fig. 2 is a horizontal sectional view of the device taken in a planeabove the valve engaging tool operating means.

Fig. 3 is a vertical sectional view on the line 3-3 of Fig. 1.

Referring more particularly to the draw ings, the reference numeral 5designates an internal combustion engine cylinder or other member havinga valve seat 6 and a valve 7 mounted therein, such valve 7 having a kerforother suitable recess 8 in its top face.

The tool comprises a U-frame 10, and'the open side of the U-frame 10isclosedby a channel member 11 secured to the ends ofthe legs of theU-frame by rivets, bolts or the like-12. The U-frame lO'is provided withan operating handle 13 secured t o-one of the legs thereof as at 14.Mounted in the U frame there is a drum or. pulley'memher 15, andsuchdru-m orpulley-memberis provided with a peripheral channel 16.Passing around the drum on pulley member 15, there is a cord 17, oneend-of which isattached, as at 18, to the U=frame,-the other end beingattached to a yoke 19 which straddles one of the legs of the U-frame 10and is adjustable with relation thereto by means of a bolt or the like,20. By this means the strain under which the cord 17 is placed may beadjusted in order to vary its frictional engagement with the drum orpulley member 15.

The peripheral channel of the drum or pulley member 15 is adapted toreceive the U-frame at one point and the peripheral edge of the drum orpulley member 15 travels within the channel member 11, as more clearlyshown in Fig. '3. By this construction the drum: or pulley member 15 ismaintained in position with the U- frame.

The drum or pulley member 15 is provided with a centrally disposedsquared opening 21 and passing through said opening there is a squaredshaft 22, the upper end of which is reduced as at 23 and provided with aloose hand wheel 24. Carried by the squared shaft 22 intermediate of itsends, there is a collar 25, which is adapted to be adjustably secured tothe squared shaft 22 by means of a set screw or the like, 26. The lowerend of the squared shaft 22 is provided with a bit 27 of a suitableshape to be received within the recess 8 on the upper face of the valvemember 7.

From the foregoing it is apparent that when the bit 27 is engaged in therecess 8 of the valve member 7, if the U-frame be reciprocated, throughthe medium of the cord 17 which passes around the drum or pulley member15, the squared shaft 22 will be intermittently rotated in oppositedirec tions, and said intermittent rotary movement will be transmittedto the valve in order to grind the same to its seat 6.

By varying the position of the collar 25 on the squared shaft 22, theposition of the U-frame relative to the ends of the squared shaft 22 maybe adjusted.

It is apparent from the above that the present invention provides a newand improved hand tool especially adapted tori grinding valves andsimilar work, and in which the Valve is maintained in proper engagementwith its seat during the grinding operation.

What is claimed is:

1. A device oi? the character described comprising a U-frame, a channelmember closing the open side of said U-frame, a driving member mountedbetween the U frame and the channel, a cord connected to the U-frame andpassing around said driving member, and a shaft passing through thedriving member and operably connected thereto.

2. A device of the character described comprising a U-frame, a channelmember closing the open side of the U-frame with its channel openingdisposed inwardly thereof, a driving member mounted in the U-framebetween the channel member and the U-frame, a shaft passing through thedriving member and operably connected thereto, and a cord passing aroundsaid driving member, said cord having its ends attached to the U-framewhereby reciprocating motion of the U-frame will impart rotary motion tothe driving member.

3. A tool of the character described comprising a U-frame having itsopen side closed by a channel member with its channel opening disposedinwardly of the U- frame, a driving member comprising a circularperipheral channel member mounted in the first-mentioned channel memberand having a portion of the U-fra-me received in its own peripheralchannel to provide for mounting the driving member between the U-trameand the first-mentioned channel member, and means carried by the U-frame for imparting intermittent rotary motion in opposite directions tothe drii ing member.

ARTHUR J. RICHARDS. FREDERICK J. SIEDENBURG.

